Thinkbaby and Thinksport formula applies easily and absorbs quickly. Be sure to apply all areas that will be exposed to sunlight, including behind the ears, neck, hands, feet, and scalp. Reapply every two hours or more as needed. While the sunscreen applies very easily, we recommend not spreading it too thin. Otherwise you will decrease the effectiveness of the sunscreen. Keep in mind that physical sunscreens work by reflecting sunlight.